JP2002308038A - Mounting structure of head part protection air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of items of attachment parts, reduce the cost and improve the assembling workability. SOLUTION: An inside part in the car width direction, of a roof side rail 20 is composed of a rail inner panel 36, and a longitudinal wall part 36A of the rail inner panel 36 is provided with plural locking parts 40 along the longitudinal direction of a vehicle. The locking parts 40 are respectively formed by cutting out a part of the longitudinal wall part 36A of the rail inner panel 36, and have tee tip parts. On the other hand, plural mounting parts 42 are projected from an upper edge part 16D of an air bag body 16 along the longitudinal direction of a vehicle, and the mounting parts 42 to be locked to the locking parts 40, among plural mounting parts 42 are provided with tee slits 44 as hole parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a head protection airbag device disposed on a vehicle body,
The present invention relates to a mounting structure for a head protection airbag device in which a folded airbag body is disposed along a roof side rail.

[0002]

2. Description of the Related Art Conventionally, an example of a mounting structure of a head protection airbag device disposed on an automobile body is disclosed in Japanese Unexamined Patent Application Publication No. 2000-163,873.
000-142302.

In such a mounting structure of a head protection airbag device, a plurality of mounting portions projecting from an upper edge of an airbag body are sandwiched between metal plates having projections for positioning and preventing rotation. Then, it is fixed to the roof side rail with bolts.

[0004]

However, as described above, a plurality of mounting portions protruding from the upper edge of the airbag body are connected to fastening members such as bolts via reinforcing members such as metal plates. In this configuration, the number of mounting parts is large, and the mounting operation is complicated.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a mounting structure for a head protection airbag device that can reduce the number of mounting parts, reduce costs and improve workability in assembling.

[0006]

According to the first aspect of the present invention, a folded airbag body is disposed along an upper edge of an opening in a vehicle interior, and is formed to project from an upper edge of the airbag body. In the mounting structure of the head protection airbag device mounted on the roof side rail at the plurality of mounting portions, the locking portion is set on the roof side rail side, and the mounting portion of the airbag body is mounted on the locking portion. Characterized in that the holes formed in the holes are locked.

Therefore, the airbag bag can be easily attached to the vehicle body only by engaging the hole formed in the attachment portion of the airbag bag with the engagement portion set on the roof side rail side. As a result, the number of attachment parts can be reduced, so that the cost can be reduced and the assembling workability can be improved.

According to a second aspect of the present invention, in the mounting structure of the head protection airbag device according to the first aspect, the locking portion is formed on a part of an inner panel of a roof side rail. It is characterized by.

Therefore, in addition to the contents described in claim 1,
By forming the locking portion on a part of the inner panel of the roof side rail, there is no need to add another component at all.

According to a third aspect of the present invention, in the mounting structure of the head protection airbag device according to the first aspect, the locking portion has a T-shaped tip and the hole has a slit. It is characterized by the following.

Therefore, in addition to the contents described in claim 1,
Since the tip portion locks the hole as the slit to the T-shaped locking portion, the locking portion and the hole are unlikely to come off when the airbag body is inflated and deployed.

According to a fourth aspect of the present invention, in the mounting structure of the head protection airbag device according to the first aspect, the locking portion is formed on an existing bracket fixed to an inner panel of a roof side rail. It is characterized by having been done.

Therefore, in addition to the contents described in claim 1,
By forming the locking portion on the existing bracket fixed to the inner panel of the roof side rail, there is no need to add another component at all.

According to a fifth aspect of the present invention, the folded airbag body is disposed along the upper edge of the opening in the vehicle interior, and a plurality of mounting portions projecting from the upper edge of the airbag body. In the mounting structure of the head protection airbag device mounted on the roof side rail, a bent holding portion that is opened downward is provided on a side of the body of the airbag bag where the tension cross is stored, and the folded tension cross is attached to the body. It is characterized in that it is sandwiched between a side surface and the bent holding portion.

Therefore, when the airbag bag is inflated and deployed,
The folded tension cloth can be easily released from the lower opening between the side surface of the body and the bent holding portion by the inflation force of the airbag body downward, and can be inflated and deployed. Further, since the folded tension cross is sandwiched between the side surface of the body and the bent holding portion, breakable tapes and socks conventionally used for holding the folded shape can be eliminated. As a result, the number of attachment parts can be reduced, so that the cost can be reduced and the assembling workability can be improved.

According to a sixth aspect of the present invention, in the mounting structure of the head protection airbag device according to the fifth aspect, the bent holding portion is formed on a part of an inner panel of a roof side rail. It is characterized by.

Therefore, in addition to the contents described in claim 5,
Since the bent holding portion is formed in a part of the inner panel of the roof side rail, there is no need to add another component at all.

According to a seventh aspect of the present invention, in the mounting structure of the head protection airbag device according to the fifth aspect, the bent holding portion is formed on an existing bracket fixed to an inner panel of a roof side rail. It is characterized by having been done.

Therefore, in addition to the contents described in claim 5,
Since the bent holding portion is formed on the existing bracket fixed to the inner panel of the roof side rail, there is no need to add another component at all.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an attachment structure for a head protection airbag bag according to the present invention will be described with reference to FIGS.

In the drawings, the arrow FR indicates the forward direction of the vehicle, the arrow UP indicates the upward direction of the vehicle, and the arrow IN indicates the inward direction of the vehicle width.

As shown in FIG. 5, a head protection airbag device 10 according to the present embodiment includes a sensor 12 for detecting a side collision state, a column-shaped inflator 14 for ejecting gas when activated. An airbag body 16,
Is a main component. The sensor 12 is
It is arranged near the lower end of the center pillar (B-pillar) 18, and detects a side collision state when a side collision load of a predetermined value or more acts on the vehicle body side.

The inflator 14 is attached to the roof side rail 20 in the vehicle front-rear direction near the rear side of the B pillar 18 and connected to the sensor 12 described above. Therefore, when the sensor 12 detects the side collision state, the inflator 14 is operated.

A front end fixing point P1 of the airbag bag 16 is provided at an intermediate portion in the vertical direction of the airbag bag 16 in a side view.
A plurality of inflatable portions 24 and 25 are formed which cross the tension line T connecting the rear end fixing point P2 and the longitudinal direction of which is the vertical direction of the airbag body. In addition, the inflatable portion 24 on the front side of the vehicle expands and deploys on the side of the head of the occupant seated in the front seat, and the inflatable portion 25 on the rear side of the vehicle is seated in the rear seat. It inflates and deploys to the side of the occupant's head.

A strap-shaped tension cloth 26 is disposed between the front end lower portion 24A of the inflatable portion 24 on the front side of the vehicle and the front end fixing point P1 of the airbag bag body 16. Expansion part 24 and vehicle rear side expansion part 2
5, a tension cross 28 in the form of a rectangular sheet is provided.

The front end 16A of the airbag bag 16 is fixed to a front pillar (A pillar) 30 and the rear end 16B of the airbag bag 16 is fixed to a quarter panel pillar (C pillar) 32. ing. The intermediate portion 16C of the airbag bag body 16 is
The gas ejected from the inflator 14 flows into the airbag body 16 from the center in the front-rear direction of the airbag body 16.

The airbag bag 16 is folded in a bellows shape in a substantially vertical direction to have a long shape, and along the upper edges of the front side window 34 and the rear side window 35 as the opening in the vehicle cabin. The front pillar garnish, the outer portion of the roof head lining in the vehicle width direction, and the quarter pillar garnish are accommodated.

As shown in FIG. 1A, the inside of the roof side rail 20 in the vehicle width direction is the rail inner panel 3.
A plurality of locking portions 40 are formed on the vertical wall portion 36A of the rail inner panel 36 along the vehicle front-rear direction. The locking portion 40 is a rail inner panel 3
6 is formed by cutting out a part of the vertical wall portion 36A, and has a T-shaped tip.

On the other hand, the upper edge 16D of the airbag bag 16
A plurality of mounting portions 42 are formed so as to protrude along the vehicle front-rear direction. Of these mounting portions 42, the mounting portions 42 that are locked to the locking portions 40 have T-shaped holes as holes. A slit 44 is formed.

The outer peripheral portion of the engaging portion 40 is chamfered, and the outer peripheral portion of the cut-out portion 41 has a long hole shape extending in the vehicle front-rear direction. The part 42 is not damaged.
Also, on the outer peripheral portion of the slit 44 in the mounting portion 42,
Sewing for reinforcement may be performed if necessary, or another cloth may be provided.

As shown in FIG. 5, the inflator 14
Are fixed to the roof side rail 20 by brackets 46 at two front and rear locations along the vehicle longitudinal direction.

As shown in FIG. 2A, the bracket 4
Reference numeral 6 denotes a belt-like shape, and the upper end 46A and the lower end 46B of the rail inner panel 3 are fastened by fastening members 48 such as bolts.
6 fixed. The lower end 4 of the bracket 46
A locking portion 50 is formed downward from 6B, and the lower end of the locking portion 50 has a T-shape.

On the other hand, the upper edge 16D of the airbag bag 16
A plurality of mounting portions 42 are formed so as to protrude along the vehicle front-rear direction. Of these mounting portions 42, the mounting portion 42 that is locked to the locking portion 50 has an inverted T-shape as a hole. Are formed. The outer peripheral portion of the locking portion 50 is chamfered so that the mounting portion 42 of the airbag body 16 is not damaged. Further, the outer periphery of the slit 52 in the mounting portion 42 may be sewn for reinforcement as necessary, or another cloth may be provided.

As shown in FIG. 5, on the vehicle rear side of the inflator 14, the folded tension cloth 28 is held by a bent holding portion 54.

As shown in FIG. 3, the bent holding portion 54 is
It is formed by cutting and raising a part of the rail inner panel 36, and has an L-shaped cross section when viewed from the vehicle front-rear direction. That is, the vertical wall portion 64B extending downward at the vehicle width direction inner end of the upper wall portion 54A bent in the vehicle width direction.
Are formed, and the lower part is opened. The folded tension cloth 28 is connected to the vertical wall portion 36A of the rail inner panel 36 serving as the side surface of the body and the bending holding portion 5
4 between the vertical wall portions 54B.

The outer periphery of the bent holding portion 54 is chamfered so that the tension cloth 28 of the airbag body 16 is not damaged. The lower portion 54C of the vertical wall portion 54B is inclined downward inward in the vehicle width direction, so that the tension cross 28
Are easily removed from between the vertical wall portion 36A of the rail inner panel 36 and the vertical wall portion 54B of the bent holding portion 54.

As shown in FIG. 5, in the A pillar 30, the wire harness 60 is fixed by brackets 62 at a plurality of locations along the vehicle longitudinal direction.

As shown in FIG. 4, the bracket 62 has a band shape, and the upper end 62A and the lower end 62B are fixed to the front pillar inner panel 66 by fastening members 64 such as bolts. A bent holding portion 68 is formed downward from a lower end portion 62B of the bracket 62. The bent holding portion 68 has an L-shaped cross section when viewed from the vehicle front-rear direction. That is, a vertical wall portion 68B extending downward is formed at the vehicle width direction inner end of the upper wall portion 68A bent in the vehicle width direction, and the lower portion is open. Further, the folded tension cloth 26 is sandwiched between a vertical wall portion 66A of the front pillar inner panel 66 serving as a body side surface and a vertical wall portion 68B of the bent holding portion 68.

The outer periphery of the bent holding section 68 is chamfered so that the tension cloth 26 of the airbag body 16 is not damaged. A lower portion 68C of the vertical wall portion 68B is inclined substantially inward and downward in the vehicle width direction.
6 is a vertical wall portion 66A of the front pillar inner panel 66
And the vertical wall portion 68 </ b> B of the bent holding portion 68.

Next, the operation of the present embodiment will be described.

In this embodiment, when a side impact load equal to or more than a predetermined value acts on the side of the vehicle body, the sensor 1 detects that a side collision has occurred.
2 detected. For this reason, the inflator 14 operates and a predetermined amount of gas is ejected. As a result, the airbag bag body 16 starts to inflate and deploy, and the inflated and deployed airbag bag body 16 pushes and opens the A-pillar garnish, the outer side portion of the roof head lining in the vehicle width direction, and the C-pillar garnish, and the roof side rail 20. 5 is expanded and deployed in a curtain shape as shown by a two-dot chain line in FIG.

In the present embodiment, the airbag 1
When assembling the airbag bag 16 into the vehicle body, the locking portion 40 set on the vertical wall portion 36A of the rail inner panel 36 is attached to the airbag bag 16.
The airbag bag 16 can be easily attached to the vehicle body only by locking the slits 44 formed in the attachment portion 42 of FIG. As a result, the number of attachment parts can be reduced, so that the cost can be reduced and the assembling workability can be improved. Further, the locking portion 40 is connected to the rail inner panel 36.
Formed on a part of the vertical wall portion 36A, there is no need to add another component at all.

In the present embodiment, the T-shaped slit 44 is locked to the T-shaped locking portion 40 at the tip end.
When the airbag body 16 is inflated and deployed, the locking portion 40 and the slit 44 are unlikely to come off. Note that the length L1 of the slit 44 in the vehicle longitudinal direction is slightly shorter than the length L2 of the locking portion 40 in the vehicle longitudinal direction. It is done with a slight inclination,
As shown in (B), in the locked state, the locking portion 40 may be made harder to fall out of the slit 44.

In this embodiment, the inflator 14
Is formed by the existing inflator mounting bracket 46 fixed to the rail inner panel 36, so that there is no need to add another component at all.

Further, in this embodiment, since the inverted T-shaped slit 52 is locked to the T-shaped locking portion 50 at the lower end portion, the air bag 16 is inflated and deployed when it is inflated and deployed. The stopper 50 and the slit 52 are hard to come off. The length L3 of the slit 52 formed in the attachment portion 42 of the airbag bag 16 in the vehicle longitudinal direction is determined by the length L3 of the locking portion 50 in the vehicle longitudinal direction.
When the slit 52 is locked to the locking portion 50 by slightly shortening the mounting portion 42, the mounting portion 42 is slightly tilted.
As shown in FIG. 5, in the locked state, the locking portion 50 is
You may make it harder to come out of 2 more.

Further, in this embodiment, the folded tension cloth 28 is provided with the vertical wall portion 36A of the rail inner panel 36 serving as the body side surface and the vertical wall portion 54B of the bent holding portion 54.
Therefore, breakable tapes and socks conventionally used for holding the folded shape of the airbag bag body 16 can be eliminated. As a result, the number of mounting parts can be reduced, and in this regard, the cost can be reduced and the assembling workability can be improved.

In the present embodiment, the bent holding portion 54 is formed in a part of the rail inner panel 36, and the bent holding portion 68 is formed by the existing wire harness mounting bracket 62 fixed to the front pillar inner panel 66. Since it is configured, it is not necessary to add another component at these portions.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are within the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in the above embodiment, the shape of the locking portion 40 is T-shaped. However, the shape of the locking portion 40 is not limited to the T-shape. For example, as shown in FIG. 40 is a rod-like shape, and as shown in FIG.
As shown in FIG. 6C, the locking portion 40 may have another shape such as an L-shape. In the above embodiment, the T-shaped slit 44 is formed as the hole, but the hole is not limited to the T-shaped slit 44. For example, as shown in FIG. It is good also as other shapes, such as the long hole 70.

As shown in FIG. 7, an inflatable portion 72 filled with gas from an inflator is formed on the outer peripheral portion of the elongated hole 70 in the mounting portion 42 of the airbag bag body 16 to form an airbag bag body. 16 expands and develops when the slot 70
May be difficult to detach from the locking portion 40.

As shown in FIG. 8, the tip of the mounting portion 42 of the airbag bag 16 is T-shaped, and a long hole formed by cutting out a part of the vertical wall portion 36A of the rail inner panel 36. A configuration in which the distal end 42 </ b> A of the mounting portion 42 is inserted into the portion 74. In this configuration,
The length M1 of the inflatable portion 42A at the tip end of the mounting portion 42 in the vehicle longitudinal direction is defined as the length M1 of the elongated hole 74 in the vehicle longitudinal direction.
2, so that when the airbag bag body 16 is inflated and deployed, the mounting portion 42 is hardly disengaged from the long hole 74.

The head protection airbag bag mounting structure of the present invention can be applied to a head protection airbag device in which an inflator is disposed on the front side of a vehicle, for example, an A pillar, or an inflator is mounted on a rear side of a vehicle, for example, a C pillar. The present invention is also applicable to the head protection airbag device provided, and the shape of the airbag bag body is not limited to the above embodiment.

[0052]

According to the first aspect of the present invention, a plurality of attachments are provided in which the folded airbag body is disposed along the upper edge of the opening in the vehicle interior, and is formed at the upper edge of the airbag body. In the mounting structure of the head protection airbag device mounted on the roof side rail at the locking portion, the locking portion is set on the roof side rail side, and the locking portion has a hole formed in the mounting portion of the airbag body. As a result, the number of mounting parts can be reduced, the cost can be reduced, and the assembling workability can be improved.

According to a second aspect of the present invention, in the mounting structure of the head protection airbag device according to the first aspect, the locking portion is formed on a part of the inner panel of the roof side rail. In addition to the effect described in claim 1, there is an excellent effect that there is no need to add another component.

According to a third aspect of the present invention, in the mounting structure for a head protection airbag device according to the first aspect, the locking portion has a T-shaped tip and the hole has a slit.
In addition to the effect of the first aspect, there is an excellent effect that the locking portion and the hole are hard to come off when the airbag bag is inflated and deployed.

According to a fourth aspect of the present invention, in the mounting structure of the head protection airbag device according to the first aspect, the locking portion is formed on an existing bracket fixed to the inner panel of the roof side rail. Therefore, in addition to the effect described in claim 1, there is an excellent effect that there is no need to add another component at all.

According to the fifth aspect of the present invention, the folded airbag body is disposed along the upper edge of the opening in the vehicle interior, and the plurality of mounting portions projecting from the upper edge of the airbag body. In the mounting structure of the head protection airbag device mounted on the roof side rail, a bent holding portion that is opened downward is provided on the side of the body of the airbag bag where the tension cross is stored, and the folded tension cross is attached to the side of the body. Since it is sandwiched between the flexible holding member and the bent holding portion, it has an excellent effect that the number of mounting parts can be reduced, the cost can be reduced, and the assembling workability can be improved.

According to a sixth aspect of the present invention, in the mounting structure of the head protection airbag device according to the fifth aspect, the bent holding portion is formed on a part of the inner panel of the roof side rail. In addition to the effect described in claim 5, there is an excellent effect that there is no need to add another component at all.

According to a seventh aspect of the present invention, in the mounting structure of the head protection airbag device according to the fifth aspect, the bent holding portion is formed on an existing bracket fixed to the inner panel of the roof side rail. Therefore, in addition to the effect described in claim 5, there is an excellent effect that there is no need to add another component at all.

[Brief description of the drawings]

FIG. 1A is an exploded perspective view showing an attachment structure of a head protection airbag device according to one embodiment of the present invention,
(B) is a perspective view showing a mounting structure of the head protection airbag device according to one embodiment of the present invention.

FIG. 2A is an exploded perspective view showing a mounting structure of a head protection airbag device according to one embodiment of the present invention,
(B) is a perspective view showing a mounting structure of the head protection airbag device according to one embodiment of the present invention.

FIG. 3 is a perspective view showing a mounting structure of the head protection airbag device according to one embodiment of the present invention.

FIG. 4 is a perspective view showing a mounting structure of the head protection airbag device according to one embodiment of the present invention.

FIG. 5 is a side view showing a vehicle cabin side to which the mounting structure of the head protection airbag device according to one embodiment of the present invention is applied.

FIGS. 6A to 6C are side views showing locking portions of the mounting structure of the head protection airbag device according to a modification of the embodiment of the present invention.

FIG. 7 is a side view showing a mounting structure of a head protection airbag device according to another embodiment of the present invention.

FIG. 8 is a side view showing a mounting structure of a head protection airbag device according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 Head protection airbag device 14 Inflator 16 Airbag bag 18 Center pillar 20 Roof side rail 24 Inflated portion of airbag bag 25 Inflated portion of airbag bag 26 Tension cross of airbag bag 28 Airbag bag Tension cross 34 Front side window (vehicle interior opening) 35 Rear side window (vehicle interior opening) 36 Rail inner panel 40 Locking part 42 Airbag bag mounting part 44 Slit (hole) 46 Inflator mounting bracket 50 Locking part 52 Slit (hole) 54 Bending holding part 62 Bracket for attaching wire harness 68 Bending holding part 70 Slot (hole)

Claims (7)

[Claims] 1. A head in which a folded airbag body is disposed along an upper edge of an opening in a vehicle interior, and is attached to a roof side rail at a plurality of mounting portions projecting from an upper edge of the airbag body. In the mounting structure of the part protection airbag device, the locking part is set on the roof side rail side,
A mounting structure for a head protection airbag device, wherein a hole formed in a mounting portion of the airbag body is locked to the locking portion. 2. The mounting structure according to claim 1, wherein the locking portion is formed on a part of an inner panel of a roof side rail. 3. The mounting structure for a head protection airbag device according to claim 1, wherein the locking portion has a T-shaped tip, and the hole is a slit. 4. The mounting structure according to claim 1, wherein the locking portion is formed on an existing bracket fixed to an inner panel of a roof side rail. 5. A head in which a folded airbag body is disposed along an upper edge of an opening in a vehicle interior, and is attached to a roof side rail at a plurality of mounting portions projecting from an upper edge of the airbag body. In the mounting structure of the part protection airbag device, a bent holding portion that is opened downward is provided on a body side portion of the airbag bag body where the tension cross is stored,
An installation structure for a head protection airbag device, wherein a folded tension cross is sandwiched between a body side surface and the bent holding portion. 6. The mounting structure for a head protection airbag device according to claim 5, wherein the bent holding portion is formed on a part of an inner panel of a roof side rail. 7. The mounting structure according to claim 5, wherein the bent holding portion is formed on an existing bracket fixed to an inner panel of a roof side rail.